Slorider3 - you may dispense with the snarky, condescending commentary. You obviously don't understand the problem that we are all experiencing. This forum is about helping others, not making snippy comments. First off, your comment, "Why else would you power on the Blu-ray player if you're not getting ready to watch a movie, right?", shows a lack of comprehension of the original poster's problem and no working knowledge of the Samsung models being discussed. The 5500 and 6500 models are "Home Theater In a Box" models, sir. They are not standalone Blu-ray players. So, to answer your question, "Why else would you power on the Blu-ray player if you're not getting ready to watch a movie, right?"...well, anyone of us who wants to watch Cable TV in something better than the little 8w speakers in the TV set NEED to power on the Home Theater, which includes the built-in Blue-ray player. Get it? Further, it has been determined by the great people of this forum that it is indeed an issue with a defect in the touch screen, causing the input source to roll to another selection on its own. The original post, if you read it sir, was about the source input changing...and it has been determined by all of us here that it is caused by bad touch controls. I hope this clears up your confusion and generates an apology from you to all of us for being both snippy and wrong at the same time.